Magnitude 6.5 (mww), 10 km deep, central Mid-Atlantic Ridge — 1.08°S, 23.43°W. November 30, 2017 at 06:32 UTC. Tsunami: USGS flags this quake as having caused one, or the potential for one. https://earthquake.usgs.gov/earthquakes/eventpage/us1000bj7t Data: US Geological Survey (public domain).